Destrochloridium is a sadistic monster who likes to kill human for fun as he controls a Hero Association staff member to shoot a pistol at one of the member of Hero Association committee. It is also to have great desire to steal S-Class heroes body to increase its own power tremendously.

Destrochloridium first appear when he controls a Hero Association staff to deliver the message from Gyoro Gyoro to the Hero Association. During the negotiation, he deliberately shoots a member of the committee with a pistol and sadistically saying that he slips his hand.[1]

After Gyoro Gyoro finishes the demand to the Hero Association to gather all top class heroes to rescue the hostages in the Monster Association Headquarters, he begins to consider slaughter the committee with the host body only for Superalloy Darkshine to throw his host body into the wall. He then escape the host body and tries to take over Darkshine's body only to see his drill attack to be useless against Darkshine's impenetrable body. He is then killed by Darkshine after Darkshine squishes him like a bug into pieces.[2]